Joachim Häcker, Tobias Rommel, Pia Lange, Felix Kampmann, Jürgen Remmlinger, Zhirong Zhao-Karger, K. Andreas Friedrich, Maryam Nojabaee
{"title":"Interfacial processes of Mg anodes for magnesium-sulfur batteries: An EIS study","authors":"Joachim Häcker, Tobias Rommel, Pia Lange, Felix Kampmann, Jürgen Remmlinger, Zhirong Zhao-Karger, K. Andreas Friedrich, Maryam Nojabaee","doi":"10.1016/j.jma.2025.04.001","DOIUrl":"https://doi.org/10.1016/j.jma.2025.04.001","url":null,"abstract":"The development of magnesium batteries strongly relies on the use of a Mg metal anode and its benefits of high volumetric capacity, reduction potential, low cost and improved safety, however, to date, it still lacks sufficient cycling stability and reversibility. Along with the electrolyte selection, the interfacial processes can be affected by the anode itself applying electrode engineering strategies. In this study, six different Mg anode approaches – namely bare Mg metal, Mg foil with an organic and inorganic artificial solid electrolyte interphase, Mg alloy, Mg pellet and a tape-casted Mg slurry – are selected to be investigated by means of electrochemical impedance spectroscopy in Mg|Mg and Mg|S cells. While a plating/stripping overpotential asymmetry was observed and assigned to the desolvation during Mg plating, the impedance spectra of stripping and plating hardly differ for all applied anodes. In contrast, the sulfur species significantly influence the impedance response by altering the surface layer composition. By systematic process assignment of the gained spectra in Mg|Mg and Mg|S cells, specific equivalent circuit models for different anodes and cell conditions are derived. Overall, the study aims to give valuable insights into the interfacial processes of Mg anodes to support their further development toward long-lasting Mg batteries.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"53 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143926341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of element Ce on the strain rate sensitivity of Mg-Zn-Zr alloy","authors":"","doi":"10.1016/j.jma.2025.04.017","DOIUrl":"https://doi.org/10.1016/j.jma.2025.04.017","url":null,"abstract":"Investigations into the strain rate sensitivity of magnesium (Mg) alloys represent a current research focus in materials science. However, most studie…","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"66 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143915572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Achieving high modulus and strength in ultra-light Mg-Li alloys through in situ-synthesized Mg2Si phase","authors":"Yangyang Xu, Meng Li, Yuchuan Huang, Jiawei Sun, Peng Sun, Hongchao Xiao, Gang Zeng, Qi Li, Youjie Guo, Guohua Wu, Wencai Liu","doi":"10.1016/j.jma.2025.04.009","DOIUrl":"https://doi.org/10.1016/j.jma.2025.04.009","url":null,"abstract":"Enhancing the low modulus and absolute strength of Mg-Li alloys remains a key research focus. This study employed an in situ-synthesis strategy to incorporate high-modulus phases, such as Mg<sub>2</sub>Si, achieving a synergistic improvement in strength, plasticity, and modulus. The presence of Mg<sub>2</sub>Si improved the microstructure of the matrix and promoted dynamic recrystallization, leading to a refined grain size of 2.9 µm. Through the combined effects of grain refinement strengthening and coefficient of thermal expansion mismatch strengthening, the Mg-8Li-3Al-2Zn-1Y-0.5Mn-0.5Gd-1Si alloy exhibited exceptional mechanical properties, including a yield strength of 248 MPa, an ultimate tensile strength of 273 MPa, an elastic modulus of 51 GPa, and a plasticity of 20.6 %. This study offers a new approach for designing and developing ultra-light, high-modulus Mg-Li alloys.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"39 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143915570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yingying Yao, Yinghui Li, Zhao Li, Hao Xu, Yang Zhan, Fengzhan Sun, Ya Yang, Richard M. Laine, Liang Fu, Jianxin Zou
{"title":"Exploring high-performance magnesium-sulfur pouch cells using nitrogen-rich doped nano porous carbon","authors":"Yingying Yao, Yinghui Li, Zhao Li, Hao Xu, Yang Zhan, Fengzhan Sun, Ya Yang, Richard M. Laine, Liang Fu, Jianxin Zou","doi":"10.1016/j.jma.2025.03.028","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.028","url":null,"abstract":"Magnesium-sulfur batteries (MSBs) are promising due to Mg's lower propensity to form dendrites, its natural abundance, and high volumetric energy densities for large-scale energy storage. Nonetheless, Mg<sup>2+</sup> ions have poor diffusion kinetics and the magnesium polysulfide (MgPS) shuttle effect present significant challenges for MSBs. Herein, a Mg-S pouch cell is designed using rich N-doped porous carbon (ZIF8-NC) and a Cu current collector. This architecture provides numerous benefits: i) ZIF8-NC offers a conductive skeleton that significantly enhances electron and Mg<sup>2+</sup> ion conduction, ii) zeolite imidazolate frameworks (ZIF-8) derived N rich sites demonstrate superior MgPS anchoring capability, iii) the Cu collector not only accelerates conversion of anchored MgPS to MgS, but also participates in the electrode reaction and iv) the material is easy to synthesize on a large scale, facilitating its potential for practical applications. Mg-S/ZIF8-NC coin cells maintain ∼310 mAh·g<sup>-1</sup> after 1000 cycles even at 1C. Furthermore, Mg-S/ZIF8-NC pouch cells achieve high cathodic energy densities of ∼120 Wh·kg<sup>-1</sup> and ∼330 mAh·g<sup>-1</sup> after 300 cycles at 1C, outperforming the state-of-the-art results in the literature. Soft X-ray absorption spectroscopy (sXAS) revealed that the initial catalytic reaction of Cu follows Cu<sup>0</sup>↔Cu<sub>2</sub>S, and later Cu<sub>2</sub>S↔Cu<sub>x</sub>S. Theoretical calculations and experimental results reveal that pyridine nitrogen acts as catalytic site for polysulfide adsorption. Therefore, this work not only provides a facile method to prepare high-performance Mg-S pouch cells, but also proposes mechanisms whereby N active sites and Cu catalytic reactions promote all aspects of performance.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"12 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143915573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Unusual tensile strengths and strain-hardening behaviors and their structural correlation of Mg-RE solid solution","authors":"Wenbo Luo, Rongsheng Bai, Zhilei Yu, Xiuzhu Han, Tong Guo, Zhiyong Xue, Chen Wen, Mingyue Zheng, Feng Li, Zhihao Lin","doi":"10.1016/j.jma.2025.04.002","DOIUrl":"https://doi.org/10.1016/j.jma.2025.04.002","url":null,"abstract":"This study systematically investigates the unusual tensile mechanical behavior of Mg-RE solid solution (SS) alloys, exhibiting anomalous tensile strengths (ATS) and an enhanced strain-hardening rate at high temperature. Both the peak ultimate tensile strength (UTS) and tensile yield strength (TYS) values occur at 150–200 °C, which are 12–50% higher compared to those at room temperature (RT). Meanwhile, the strain-hardening rate increases with the temperature rising from RT to 200 °C during the plastic deformation process. The results reveal that the formation of stacking faults (SFs) and the locking of dislocations, particularly immobile 〈c〉 partial dislocations, enhance resistance to plastic deformation, leading to higher strengths at high temperature. Furthermore, the interactivity between SFs and 〈<em>c</em> + <em>a</em>〉 dislocations intensify with rising of temperature. The presence of RE atoms in the SS plays a critical role in this unique mechanical behavior, as they preferentially occupy non-basal planes rather than basal planes, thereby reducing the stacking fault (SF) formation energy. This study provides new insights into the high-temperature strengthening mechanisms of Mg-RE based alloys, offering potential guidance for the design of advanced lightweight materials with superior mechanical properties.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"1 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143901320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Moein Imani Foumani, Syed Taha Khursheed, Yushun Liu, Guo-zhen Zhu
{"title":"Orientation-dependence of incipient plasticity in a coarse-grained Mg revealed by nanoindentation pop-ins","authors":"Moein Imani Foumani, Syed Taha Khursheed, Yushun Liu, Guo-zhen Zhu","doi":"10.1016/j.jma.2025.04.004","DOIUrl":"https://doi.org/10.1016/j.jma.2025.04.004","url":null,"abstract":"The nanoindentation pop-in behaviors of 13 grains with diverse crystallographic orientations were analysed using a coarse-grained Mg-2 wt.% Gd alloy. Within nanoscale stressed volumes within all grains, the converted shear stresses for the first pop-in, calculated using the indentation Schmid factor, ranged from 1 to 1.3 GPa, consistent with theoretical predictions for dislocation nucleation in Mg. The estimated activation volume of the first pop-in was approximately 27–40 ų (involving about ∼2 atoms), aligning with reported atomistic simulations of the surface dislocation semi-loop nucleation. While indented near the ⟨c⟩-axis, grains exhibit higher first pop-in loads and successive pop-ins, implying the possibility of a cross-slip nucleation mechanism to accommodate ⟨c⟩-axis deformation.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"59 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143893952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jichuan Fan, Hong Yang, Wenlong Xie, Gong Chen, Yunxuan Zhou, Kaihong Zheng, Jun Xu, Jun Tan, Xianhua Chen, Fusheng Pan
{"title":"Clarifying interfacial microstructures of Ti particle reinforced Mg-Zn-Mn composites to achieve good strength-ductility synergy","authors":"Jichuan Fan, Hong Yang, Wenlong Xie, Gong Chen, Yunxuan Zhou, Kaihong Zheng, Jun Xu, Jun Tan, Xianhua Chen, Fusheng Pan","doi":"10.1016/j.jma.2025.03.030","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.030","url":null,"abstract":"In the field of particle reinforced magnesium (Mg) matrix composites (MMCs), the interfacial microstructures between reinforcements and Mg matrix are a subject of interest for most researchers. In this work, the 2 wt.% Ti particle reinforced Mg-6 Zn alloy composites with different contents (0, 0.5, 1, 1.5, 2 wt.%) of Mn were prepared using semi-solid stirring assisted ultrasonic treatment followed by hot extrusion. With the increment of Mn element, the characteristics of mixed-grain structure became obvious and the DRX was inhibited. Meanwhile, the interfacial product gradually changed from MgZn<sub>2</sub> to Mn<sub>2</sub>Ti. The tensile test demonstrated that the 2Ti/Mg-6Zn-1.5Mn composite exhibited an excellent strength-ductility synergy, achieving the highest yield stress (YS), ultimate tensile stress (UTS) of 239 MPa, 366 MPa, respectively, along with a notable elongation (El.) of 20.6%. The increased strength is mainly due to the grain refinement, the precipitation strengthening, the HDI strengthening and the strong interfacial bonding including the tightly Ti/Mn<sub>2</sub>Ti bonding and the Mn<sub>2</sub>Ti/Mg coherent orientation relationship. The ideal El. is the result of fine/coarse bimodal structure and the proper interfacial reaction, which can reduce the occurrence of cracks.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"60 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design of 8HQ@ZIF-8/PDA smart nanocontainers via host-guest nanoconfinement and surface self-assembly for enhanced corrosion protection and self-healing of magnesium alloy epoxy composite coatings","authors":"Xiaomeng Yu, Yuejun Ouyang, Jilan Long, Dan Xu, Guangming Liang, Zhiyuan Feng, Dongmei Pu, Qiwen Yong, Zhi-Hui Xie","doi":"10.1016/j.jma.2025.04.006","DOIUrl":"https://doi.org/10.1016/j.jma.2025.04.006","url":null,"abstract":"Conventional nanoparticles incorporated into epoxy coatings suffer from poor compatibility and insufficient corrosion improvement, hindering their practical applications. A dual-strategy approach integrating in-situ host–guest nanoconfinement and surface self-assembly was devised to fabricate 8HQ@ZIF-8/PDA smart nanocontainers. The guest 8-hydroxyquinoline (8HQ) was encapsulated within the zeolitic imidazolate framework-8 (ZIF-8) host, leveraging nanoconfinement effects. A bioinspired polydopamine (PDA) layer was then self-assembled on the 8HQ@ZIF-8 surface through dopamine oxidative self-polymerization, resulting in a robust nanocontainer architecture. Density functional theory (DFT) calculations verify that the molecular interactions between the PDA and the ZIF-8 surface was the chemical adsorption. The resultant 8HQ@ZIF-8/PDA retained the rhombic dodecahedral morphology and crystallinity of ZIF-8, demonstrating controlled pH-responsive release behavior. When incorporated into an epoxy (EP) resin matrix on magnesium alloy, the 8HQ@ZIF-8/PDA/EP smart composite coatings exhibited outstanding interfacial compatibility and long-term stability, achieving a low-frequency impedance (|<em>Z</em>|₀.₀₁<sub>Hz</sub>) of 2.49 × 10⁷ Ω cm², a maximum phase angle of 82.8°, and a breakpoint frequency (<em>f</em><sub>b</sub>) of 63.34 Hz after 50 days of immersion in a 3.5 wt% NaCl solution. These findings highlight the exceptional self-healing and corrosion-resistant properties of the 8HQ@ZIF-8/PDA/EP smart composite coatings, underscoring its potential for protecting magnesium alloys in aggressive environments.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"7 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Physical and chemical interfacial engineering of mg anodes for rechargeable magnesium batteries","authors":"Hyungjin Lee, Jangwook Pyun, Inkyoung Han, Haewon Kim, Seunghyeop Baek, Yeonu Lee, Jihun Roh, Doron Aurbach, Seung-Tae Hong, Munseok S. Chae","doi":"10.1016/j.jma.2025.03.025","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.025","url":null,"abstract":"Rechargeable magnesium batteries are promising alternatives to traditional lithium batteries because of the high abundance of Mg compounds in earth crust, their low toxicity, and possible favorable properties as electrodes’ material. However, Mg metal anodes face several challenges, notably the natively existence of an inactive oxide layer on their surfaces, which reduces their effectiveness. Additionally, interactions of Mg electrodes with electrolyte solutions’ components can lead to the formation of insulating surface layers, that can fully block them for ions transport. This review addresses these issues by focusing on surface treatments strategies to enhance electrochemical performance of Mg anodes. It highlights chemical and physical modification techniques to prevent oxidation and inactive-layers formation, as well as their practical implications for MIBs. We also examined the impact of Mg anodes’ surface engineering on their electrochemical reversibility and cycling efficiency. Finally, future research directions to improve the performance and commercial viability of magnesium anodes and advance development of high-capacity, safe, and cost-effective energy storage systems based on magnesium electrochemistry are discussed.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"17 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}